import tablib

headers = ('first_name', 'last_name')

data = [
    ('John', 'Adams'),
    ('George', 'Washington')
]

tdata = tablib.Dataset(*data, headers=headers)

tdata.append(('Henry', 'Ford'))
tdata.append_col((90, 67, 83), header='age')

print(tdata.json)
print(tdata.yaml)
print(tdata.csv)